Warmth retention is good because each filament of down is made up of thousands of tiny scales. Each scale is hollow. These tiny pores are filled with plenty of still air. Because the conductivity of air is the lowest, a natural barrier is formed, which prevents the convection of hot and cold air. These static air can shrink and expand with the change of temperature, produce the function of temperature regulation, absorb the heat emitted by human body, and isolate the invasion of cold air outside. That's why down has good thermal properties.
Soft, non-oppressive feather quilt, soft texture, a duplex quilt about 2.5 kg (quilt weight of 4.8-7.2 kg, silk quilt 3.6 kg), is the lightest natural warming bedding on the planet. It does not cause a sense of oppression on human body (heart and lungs), but can promote blood circulation and turn over easily. It is most suitable for children, pregnant women, the elderly, people with poor sleep or people with hypertension.
Because feather is a three-dimensional spherical fiber, which contains a large amount of static air, it can shrink and expand with the change of temperature, resulting in temperature regulation function. Down quilts can be used at temperatures from 25 degrees to minus 40 degrees.
Powerful hygroscopicity and dehumidification feathers have strong hygroscopicity and dehumidity. They can automatically circulate for hygroscopicity, diffusion and evaporation at different temperatures and humidities. Because of the structure of down, its surface area is very large, so it will soon emit after absorbing water. In addition, the down itself contains a certain amount of oil, which has the ability to dehumidify. In addition to absorbing the sweat discharged by the human body during sleep and discharging it quickly, the down quilt can also automatically adjust the temperature inside the quilt, with the function of moisture absorption and dehumidification, which can keep the human body dry and prevent rheumatism. Comfortable relative humidity is 40-70, in southern China, the relative humidity is relatively high, up to 90 in some areas, so rheumatism, arthritis, neuralgia, eczema and other diseases are quite common, the use of down quilt can effectively reduce the incidence of such diseases.
Fluffy degree and high fluffy degree refer to "a certain amount of down (feather) occupies the volume under constant pressure in a certain caliber container". Here refers to the elasticity of quilt, which is the key index to measure the quality and grade of down quilt. The fluffy degree is related to the comfort degree of the quilt and the performance of heat preservation, temperature adjustment, moisture absorption and dehumidification. For example, quilts made of linear fibers such as chemical fibers, cotton, wool, silk, etc. are easy to harden, reduce fluffy degree, shorten in size, and degrade quickly after 1-2 years of use. Therefore, their functions of heat preservation, temperature regulation, moisture absorption and moisture removal are also reduced. Because of its three-dimensional spherical shape and rich in oil, unique down will never be rigid in use for many years, which can keep its function as new for a long time.
Good safety is not afraid of water - cotton is easy to absorb water, not easy to dry after wetting, and can not be washed, while feather quilt can be washed, easy to dry; not afraid of fire - feather is animal protein, temperature below 100 degrees Celsius (such as cigarette butt) will not burn.
Durability and economy of a good down quilt, its life of anti-down cloth can reach 30 years, filling down life can reach 70 years, in Europe can be passed on for three generations, the average annual use cost is very low, and regardless of comfort, value, average use cost and durability are superior to other material quilts.
Close to the body is good because the down quilt is light, soft and comfortable, and the human body fits well, making the body feel warmer and more comfortable. In addition, the sewing process of down quilt is not like other traditional quilts which are flocculent, but are made into independent squares, so the fitness is the best.
The feather quilt has excellent elasticity and maximum compression ratio. It is easy to collect and use.